I did notice a change when we were getting daily SS updates before they switched TA.
The unrestricted went from 290,304 on 8/20/20 to 292,164 on 8/21/20 but it hasn’t changed since. (Some reason I took screen shots of the ss those days, can’t remember why)
I saw a similar number of shares change in the DTC count but don’t have that data.
So yeah maybe somebody decided to cash in 2 Preferred.